/ ˈsləʊgən; NAmE ˈsloʊ-/ (also NAmE informal ˈtag line ) noun
a word or phrase that is easy to remember, used for example by a political party or in advertising to attract people's attention or to suggest an idea quickly :
an advertising slogan
a campaign slogan
The crowd began chanting anti-government slogans .
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WORD ORIGIN
early 16th cent.: from Scottish Gaelic sluagh-ghairm , from sluagh army + gairm shout.